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78772 (2002 VA44)
Classification: Main-belt Asteroid          SPK-ID: 2078772
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1872001070212574 6.4718e-08  
a 2.627937953526611 1.3601e-08 au
q 2.135987687381205 1.7201e-07 au
i 18.44718945556919 6.0816e-06 deg
node 46.52257374482965 1.3451e-05 deg
peri 330.103293234792 1.826e-05 deg
M 53.16096203629785 1.0106e-05 deg
tp 2458770.720426769060
(2019-Oct-14.22042677)
4.3843e-05 TDB
period 1556.041185008231
4.26
1.208e-05
3.307e-08
d
yr
n .2313563442076217 1.7961e-09 deg/d
Q 3.119888219672017 1.6147e-08 au
  Orbit Determination Parameters
   # obs. used (total)      885  
   data-arc span      10390 days (28.45 yr)  
   first obs. used      1992-04-27  
   last obs. used      2020-10-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51989  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:25:34  

Additional Information
 Earth MOID = 1.15669 au 
 Jupiter MOID = 2.36302 au 
 T_jup = 3.304 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO359296  
diameter diameter 4.335 km 0.227 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.817 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.149   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78772 (2002 VA44)          Discovered 2002-Nov-04 by NEAT at Haleakala
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2002 VA44 = 1998 XV63 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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